Various properties have been advocated for biological evenness indices, with some properties being clearly desirable while others appear questionable. With a focus on such properties, this paper makes a distinction between properties that are clearly necessary and those that appear to be unnecessary or even inappropriate. Based on Euclidean distances as a criterion, conditions are introduced in...

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Although nature may be subtle, our interventional approaches to enhancing myocardial regeneration can be anything but. We genetically re-engineer cells to enhance their potential, reprogram cells from one type to another, apply patches of cells like plaster on a wall, or inject unfathomable numbers of cells hopeful that a small fraction cling to the heart and to life long enough to make a diffe...